31276840474643 has 2 divisors, whose sum is σ = 31276840474644. Its totient is φ = 31276840474642.

The previous prime is 31276840474631. The next prime is 31276840474657. The reversal of 31276840474643 is 34647404867213.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 31276840474643 - 2³⁸ = 31001962567699 is a prime.

It is not a weakly prime, because it can be changed into another prime (31276840494643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15638420237321 + 15638420237322.

It is an arithmetic number, because the mean of its divisors is an integer number (15638420237322).

Almost surely, 2^{31276840474643} is an apocalyptic number.

31276840474643 is a deficient number, since it is larger than the sum of its proper divisors (1).

31276840474643 is an equidigital number, since it uses as much as digits as its factorization.

31276840474643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65028096, while the sum is 59.

The spelling of 31276840474643 in words is "thirty-one trillion, two hundred seventy-six billion, eight hundred forty million, four hundred seventy-four thousand, six hundred forty-three".